Fits rear, left & right on the following Honda UTVs (excluding LE models): 2016-2021 Pioneer 1000, 2016-2021 Pioneer 1000-5. The Monster Axles XP Series axle is designed to be stronger, longer lasting, and more dependable, no matter where you ride. Key to its performance, the plunge mechanism is moved from the inner joint to the shaft itself, eliminating issues that cause joints to bind and break. The CV joints are also designed to be serviceable in the field. Replaces OEM # (left) 42350-HL4-A01, 42320-HL4-A01, (right) 42250-HL4-A01, 42220-HL4-A01. Please note these will fit Base, Premium, & Deluxe models, but not any 'Limied Edition' models. Set includes 2 axles.